OCPRF100 MP Server System Technical Product Specification

Revision 1.0

10.2.3.3UART

A universal asynchronous receiver/transmitter (UART) is memory mapped to the microcontrol- ler’s bus to allow concurrent operation of the ICMB and EMP ports. The UART is used for the EMP interface.

10.2.3.4Serial EEPROM/Temperature Sensor

The serial EEPROM is accessible on the FPC’s private I2C bus. A DS1621* temperature sensor

is also on the private I2C bus, which is used to sense the ambient temperature outside of the sys- tem.

Table 10-3: FRU Device Address

Device

Function

I2C Address

24C02*

Front panel FRU information

A0h, A1h

 

 

 

DS1621*

Temperature sensor to detect ambient temperature

90h, 91h

 

 

 

 

 

 

The 24C02*, when accessed via the I2C bus, provides the following FRU information. The FRU

information is read by the Intel® LANDesk® Server Manager or similar management software and is available via the LANDesk Server Manager console.

The 24C02 SEEPROM has 256 bytes of programmable space, which is broken into four areas. Table 10-4: SEEPROM Programming Areas is a list of the areas, a brief description of their pur- pose, and the space allocated to each area.

Table 10-4: SEEPROM Programming Areas

Area

Size

Description

 

 

 

Common header

8 Bytes

Programming offsets to the other areas below.

 

 

 

Internal use

80 Bytes

This area is reserved for general purpose use by Intel® server

 

 

management firmware/controllers.

 

 

 

Chassis information

32 Bytes

Contains chassis information.

 

 

 

Board information

56 Bytes

Contains the board FRU information listed in .

 

 

 

Product information

80 Bytes

Available for integrator use.†

 

 

 

†A utility provided by Intel, called the FRU & SDR Load Utility, allows the integrator to program any of the FRU SEEPROM in the chassis.

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